eslint-config-heck

eslint-config-heck contains ESLint and Biome configurations for ES2015+, TypeScript, and React.

Both ESLint and Biome are required. Biome handles formatting, import/export sorting, and a large set of linting rules. ESLint covers rules that Biome does not yet support. Using one without the other will leave significant gaps in your linting coverage.

Installation

npm install --save-dev eslint@9 @biomejs/biome eslint-config-heck

ESLint Setup

Create an eslint.config.js and import the nodeWithBiome configuration. This configuration only enables rules that Biome does not yet support, so it is intended to be used alongside Biome.

import nodeWithBiome from "eslint-config-heck/nodeWithBiome";

export default [
    ...nodeWithBiome,
];

Biome Setup

Create a biome.jsonc and extend the configurations you need:

{
    "$schema": "./node_modules/@biomejs/biome/configuration_schema.json",
    "extends": [
        "eslint-config-heck/biomeJsTs",
        "eslint-config-heck/biomeReactNative",
        "eslint-config-heck/biomeCss",
        "eslint-config-heck/biomeJson",
        "eslint-config-heck/biomePlaywright",
        "eslint-config-heck/biomeComplexity"
    ]
}

Available Biome Configurations

Configuration	Purpose
biomeJsTs	JavaScript and TypeScript rules, formatting, and import/export sorting
biomeReactNative	React Native specific rules
biomeCss	CSS specific rules
biomeJson	JSON specific rules
biomePlaywright	Playwright test rules
biomeComplexity	Complexity rules